Rotary engine.



Y I PATENTED NOV. 6, 1906. E. D. & E. A. E. MOUSSEAU.

ROTARY ENGINE. APPLICATION rum) FEB. s, 1906,

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.UNITED STATES PATENT oFFIo IEDWARD DAVID MOUSSEAU AND EDWARD ANTHONY EZRA MOUSSEAU,

OF'HULL, QUEBEC, CANADA; SAID EDWARD A. E. MOUSSEAU-ASSIGNOR TO SAID EDWARD D. MOUSSEAU.

RMOTARYYENGINE.

Too/ll whom may concern: 7

.Be it known that we, EDWA D DAVID MOUSSEAU and,EDwARD ANTHONY EZRA MOUSSEAU, of the city of Hull, in the county ple means for .reversing t away with thevarious forms of complicated.

- of a casing, a rotor located therein having a.

of Ottawa, Province of Quebec, Dominion of Canada, have inventedcertain new and useful 1m rovements in Rotary Engines, of

which t I e following is a specification.

-' Our inventionrelates to improvements in rotary eng nes; and the ob ects of OUI lIlVGDr tion are to devise an exceedinglysimplebut efficient form of rotary engine inwh ch the fluid-pressure on the rotor will be continuous and evenly balancedon both sides thereof, enabling a ver steady revolution to be made, further objects bein to provide. sim- %16 engine, doing valve mechanisms generally employed in devices of this class; and it consists, essentially,

, plurality of transversely-slidable plugs theretermittently admitting the motive fluid into said cam-grooves to produce a pressure: against the plugs of the. rotor, and means for mined portions of the revolution, the variousin adapted to protrude from the side thereof intocam-grooves provided in thecasing and to be movedby. said cam-grooves from one.

side of the rotor to the other, means forinexhausting -the-motive .fiuid at predeterparts 0 the device being constructed and ar-.

' ranged in detail as hereinafter more particuour engine.

- .right-handportion o transverse view of the rotor.

larly. described.

Figure 1 shows a.

dicate corresponding parts in each figure.

. the rotor C,.supported on a shaft D, jour- ,A and B are the two sections of the casing, suitably secured together by steam-tight joining means and within which is located Y naled in any suitable form of bearing a, on the .2 ing ,whic are slidablyheldin grooves c, which,

,casing. In accordance with our inventionthe rotor is of the form shown in Fig. A, havrovided therein a. plurality of plugs c,

I Specification of Letters Patent. Application filed February 8 1906. Serial F0. 300,155.

extend transversel sectional viewthrough. Fig. 2 is a perspective view ofperspective view of the vthrough the pipe at Patented Nov. 6,1906.

of the-rotor. The form of these plugs is s own in Fig. 5, and their length is greater than the width ofthe rotor, whereby they will always protrude from one side or the other to form abutments for the A motive fluid.

, On the interior side each partof the cas ingtgrooves a. a. ,-b,and b, are provided, within which the plugs are ada tedto. fit and rotate during a-portion. of t eirotationof the rotor. The grooves are diametrically placed in-each-side-of. the casing,- and thoseon one side are placed at the top and bottom and those on theother on each side. vAt each end of-each of these grooves. cam-surfaces c and b are provided, which are; adapted to raise and lower. the plugsin andout ofthe grooves. These cam-surfacesare preferably such as. would be. generated byradial lines passing through the center of the axle,,wherey the lugsv will always fit tightly onthem' and no eakage of motive fluid can take place from one side of the plug to. the :other, It will thus-be seen that asplug is by means of these grooves alternately movedfrorn one side of .the rotorto the other, and it rotates for a portion of the revolution of the rotor in a groove on one side of the rotorand for another portionof the. revolution in a groove on the opposite side. a

A motive fluid, such as steam, isintermit- .tently admitted to the grooves in which .the

plugs operate by meansof conducting-channels c formed around. the surface of ,the rotor between the plugs on each side thereof and which conduct the-fluid from the steamports a, and b to the grooves-during certain portions of the-revolution. Asecond set of steam-ports a andlfi is provided at the -.opposite endofthe groovew-hereby the engine ma be reversed, ashereinafter described. Ex aust-ports a, and b are-provided-in each of the grooves. A

For convemence 1n reversing the engine we connect the ports afand I)"; by means of. suitable conducting-pi es 6 to one side of a threeway cock E and t e. ports (r -and?) by conductingipes e to another side of;.-the threeway 000 the-supplyof fluid being'led in The exhaust-openings may also be connected together by an exhaust-pipe e A Having. fully described various parts ,admitted, and hence there will of our engine, we will briefly point out the method of operation of the same.

Assuming that the three-way cock is so turned that a motive fluid, in this case steam,

is admitted through the ports a and 6 we find that the steam will be conducted from these ports to the grooves a, a 1), and b by means of the conducting-channels c as the rotor rotates. It will thus be seen that, the length of the conducting-channel c limits the time during which steam will be admitted to the groove. By the time the steam is admitted to the groove one of the plugs 0 will be already located in position therein, and

the steam will produce a pressure'against this, producing a torque which will rotate the'rotor. The distance between the plug and the conducting-channel is so arranged that the plug will have been moved off the cam-surface a or b by the time thesteam is benothing to prevent it freely moving down the said camsurface. After the plug is rotated a certain distance in the groove it passes the exhaust-opening a or-b, which allows the steam to exhaust.

After this theplug is free to move upv the cam-sufrace at the other end ,of the groove wand then go intothe succeeding groove. on

the opposite side of the rotor. By the.ar

'. rangement of the plurality of plugs around on each side, and hence a constant torque the rotor we always insure that there is a steam-pressure at least on oneof. the plugs will be exerted on the rotor.

The steam is preferablycut ofl from each the grooves a short time before the exhaust port is opened, whereby itwill have an opportunity to do work on the rotor by its expansion in the confined space formed by the groove and the plug operating in the same. 7 is All that it is necessary to do to reverse the engine is to move the three-way cock, so that ,the motive fluid will be introduced through the ports a and b This will introduce the steam into theopposite ends of the grooves andcause the plugs to move in them in the K during opposite direction. i

It will be observed that no form of valve mechanism is required to control the admission of the .motive fluid to the engine, for the reason that-the motive fluid is controlled absolutelyby the channel-grooves formed in 55.

the sidesof the rotor, and these may, be so arranged that motive fluid will be admitted any predetermined part of the revolution.

The amount of flat surface in contact between the rotor;and the sides of the casing of fluid between the two, and as the plugs move alternately from one side to the other the pressure is alwaysequalized on both sides of the rotor. While we have described our rotary engine with steam as the motive fluid, yet it will be readilyunderstood that any other form of motive fluid, such as hot air or gas, might be employed in place thereof.

The complete and easy reversibilty of the engine by the operation of the three-way cock is an importiant feature in the construction of the engine, as the lack of reversibility has been one of the points which has mitigated considerably against the universal introduction of rotary engines as at present devised.

While wehave described with great particularity of detail one specific embodiment of ,our invention, yet it is not to-be understood that it is limited to the specific construction shown, as various changes in the details of construction might be made to -accom modate different circumstances in which the engine is used.

What we claim as our invention is- 1. In a rotary engine the combination with the rotor, a casing inclosing the same of a transversely-slidable plug inthe rotor adapted to protrude from either side thereof, a cam-groove in the casing alternately moving the plug from one side of the rotor to the other, a fluid-port extending through the casing, and a fluid-conducting channel formed. on the side of the rotor for conducting the motive fluid from the port to the groove as and for the purpose specified. i 2. In a rotary enginethe combination ;with the rotor and. easing inclosing the same, of a plurality of transversely-slidable plugs in said rotor adapted to protrude from either side thereof, cam-grooves in said casing, alternately moving the plugs from one side of the rotor to the other, fluid ports extending through said casing, fluid-conducting channels formed on'the sides of the'rotor for conducting the motive fluid from. the ports to the grooves and a plurality of exhaust-ports automatically opened by the rotation of the plugs as and for the purpose specified- 3. In a rotary engine the combination with the rotor and casing inclosing the same, of a plurality oftransversely-slidable plugs symmetrically arranged around the rotorand :adapted to protrude from either side of the same, a plurality of cam-grooves in the casing alternately moving the plugs from one side of the rotor to the other, fluid-ports extending through the casing, a plurality of fluid- ,conducting channels formed on the sides of the rotor between the plugs and adapted to conduct the motive fluid from the ports to the grooves and exhaust-ports in the bottom of the said grooves opened by the rotation of the plug as and for the purpose specified.

4. In a rotary engine the combination with the rotor and casing inclosing ,the same of a plurality of transversely slidable plugs located in said rotor and adaptedto protrude from either side thereof, cam-grooves for alternately moving the plugs to protrude from one side or the other thereof, steam-ports extending through the casing at the beginning of said cam-grooves, means for connecting the same to a suitable supply of motive fluid, fluid-ports at the opposite ends of said camgrooves, means for connecting the same to a supply of motive fluid Q and a plurality of conducting-channels on the rotor adapted to con duct the motive fluid from said ports to said grooves as and for the purpose specified.

'5. An improved rotary engine comprising a rotor, a two-part casing inclosingthe same, a plurality of symmetrically-arranged transversely-slidable plugs located in slots provided in the rotor, a plurality of grooves in each side of the casing in which the plugs are adapted to rotate, cam-surfaces at each end of said grooves for moving the plugs in and out of the same, steam-ports extending through each side of the casing, conductingchannels formed on each side of the rotor between the plugs for conducting the steam from said ports to said grooves and exhaustports located in the bottom of said grooves and adapted to be opened by the passage thereover of the'plugs substantially as described.

Signed at Ottawa, in the county of Carleton and Province of Ontario, this 15th day of March, 1906.

Witnesses: J. E. DRI'JMET,

L. H. DE PUPPALoN. 

